High-speed wireless personal area network system for extending service area

Abstract

A high-speed WPAN (Wireless Personal Area Network) system for extending a service area includes an optical fiber serving as a medium for transmitting data; a plurality of pico-nets each including a plurality of devices and a PNC (Pico-Net Coordinator) device for managing the devices; a plurality of two-way signal converters corresponding to the pico-nets, each of the signal converters adapted for converting an optical signal received from the optical fiber into an electrical signal to transmit the electrical signal to the pico-nets, and for converting an electrical signal received from each of the pico-nets into an optical signal to transmit the optical signal to the optical fiber. A plurality of connectors are attached to the optical fiber and the signal converters for transmitting signals input from the optical fiber and the signal converters bidirectionally. One of the PNC devices provided in the pico-nets allocates and manages timeslots for all the devices located in the plurality of pico-nets, and the plurality of pico-nets may be operated as a single logical unit.

Description

CLAIM OF PRIORITY[0001]This application claims priority to an application entitled “HIGH-SPEED WIRELESS PERSONAL AREA NETWORK SYSTEM FOR EXTENDING SERVICE AREA,” filed in the Korean Intellectual Property Office on Aug. 1, 2003 and assigned Serial No. 2003-53506, the contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a high-speed WPAN (Wireless Personal Area Network) based on IEEE (Institute of Electrical and Electronics Engineers) 802.15.3 using an Ultra Wide Band (UWB) frequency. More particularly, the present invention relates to a high-speed WPAN capable of extending a service area so that communication between devices located in different pico-nets can be enabled.[0004]2. Description of the Related Art[0005]Typically, wireless communication technologies that use an Ultra Wide Band (UWB) frequency can transmit communications at a distance of about 10 m˜1 km when using a frequency ...

AI Technical Summary

Benefits of technology

[0031]Therefore in view of the aforementioned problems in the art, the present invention provides a high-speed WPAN (Wireless Personal Area Network) capable of simply and quickly transmitting data between any devices located in different pico-nets.

Problems solved by technology

In addition, these technologies typically have the characteristics of a high data rate (e.g., 500 Mbps˜1 Gbps), and low electric power (e.g., 1 / 100 of the electric power required for a mobile phone and a wireless LAN (Local Area Network)) when compared with existing IEEE 802.11 (Institute of Electrical and Electronics Engineers) and Bluetooth technologies.

Since transmission outputs are limited to −41.3 dBm or below (e.g., a frequency band of 3.1 GHz˜10.6 GHz) so that interference associated with an existing frequency band can be minimized, there still exists a problem in that the physical service area is limited to within the approximately 10 m radius, despite the fact that wireless communications in the high-speed WPAN utilize the UWB frequencies for wireless communications.

However, the PNC device cannot communicate with a PNC device located in another pico-net.

The result of using divide bandwidths is that a data transfer function cannot be performed between the parent and child pico-nets.

Thus, communications between different pico-nets, i.e., communications between devices located in the different pico-nets, cannot be supported.

Furthermore, there is a problem in that the central entity 20 must have a MAC bridge function necessary for switching and transmitting data from a source pico-net to a destination pico-net.

Thus, there is a drawback in that the conventional high-speed WPAN must perform additional operations involving the central entity.

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